Background: Numerous epidemiological research point to a connection between fetal intrauterine growth restriction (IUGR) and vitamin D deficiency (VDD). Objective: The point of the present examination is to research the vitamin D status and find if there is a relationship between maternal vitamin D insufficiency and intra uterine growth restriction (IUGR). Subjects and Methods: From February to August 2019, our case-control study was carried out in the Maternity Hospital of Ain Shams University, it included 80 pregnant ladies (40 of them with IUGR and the other 40 with normal fetal growth). Included pregnant ladies were sampled for vitamin D level. Vitamin D test: By using the DRG® 25-OH D (complete) ELISA (EIA-5396), all samples were examined. Results: Our investigation indicated significant connection between maternal vitamin D status and IUGR. Results here uncovered that maternal hypovitaminosis D is related with IUGR. Conclusion: Maternal vitamin D level ought to be estimated during pregnancy. Pregnant ladies ought to be urged to get normal sources of vitamin D, for example, satisfactory sun presentation, eating nourishment wealthy in vitamin D. Royal college of obstetricians and gynaecologists (RCOG) proposals with respect to vitamin D supplementation ought to be satisfied.